Continuous synthesis of Cu/ZnO/Al₂O₃ nanoparticles in a co-precipitation reaction using a silicon based microfluidic reactor

Abstract

CuO/ZnO/Al2O3 catalysts were continuously synthesized in a microfluidic reactor, analyzed by X-ray diffraction (XRD), physisorption (BET), chemisorption, electron microscopy and X-ray absorption spectroscopy (XAS), and tested for methanol synthesis from...

Traditional vs. Microfluidic Synthesis of ZnO Nanoparticles

“…Compared to catalysts made by batch co-precipitation, the results revealed a rather consistent shape and homogenous distribution of Cu and Zn via the BET test. In addition, XRD examination demonstrated that the development of various phases results from the effective micromixing effect (short-term homogenous mixing) and the spatially regulated nucleation of the primary precipitates in tiny volumes flowing through the microchannel (Figure 8) [42].…”

Oriented Conversion of a LA/HMF Mixture to GVL and FDCA in a Biphasic Solvent over a Ru Single-Atom/Nanoparticle Dual-Site Catalyst

“…And the synergistic effects could affect the hydrogen spillover, which better promotes the hydrogenation of LA. Based on previous work, , H 2 -TPR of the CuO reduction process was adopted to detect the hydrogen spillover. As shown in Figure S13, compared with CuO + Ru-SAs@CMF, the CuO + Ru-NPs@CMF sample appeared at lower temperatures because H 2 tended to dissociate on Ru-NP sites more easily than Ru-SAs.…”

Microreactor-based micro/nanomaterials: fabrication, advances, and outlook

“…Tofighi et al 240 from the Karlsruhe Institute of Technology (KIT) in Germany continuously synthesized CuO/ZnO/Al 2 O 3 catalysts by the co-precipitation of metal nitrate aqueous solution and sodium carbonate (Na 2 CO 3 ) in a microfluidic reactor, as shown in eqn ( 10)- (15). Being made of silicon-bonded glass, the microreactor is specifically designed for in situ characterization with X-ray spectroscopy and scattering techniques.…”